<template>
     <div>
          <ul>
              <li v-for="(item, index) in arr" :key="index">{{item}}</li>
              <button :style="{transform: 'translateX(-30px)'}" @click="fn">走一走</button>
          </ul>
     </div>
</template>

<script>
export default {
   data() {
    return {
        arr: ['帅哥', '美女', '程序员']
    };
   },
   methods: {
       fn(){
          this.arr.push(this.arr[0])
          this.arr.shift()
       }
   }
}
</script>

<style>

</style>